With so much access to student data these days, teachers are experimenting with different tactics, and figuring out what's working and what's not. As with most scenarios using education technology, it's a mixed bag. How it's used depends on a variety of factors in each school and in each teacher’s classroom. Some teachers are embracing student data to inform their teaching, while others believe there's a risk of an over-reliance on hard numbers that doesn’t take into account the human factor.